Copying one Collection entry to another Collection

The statamic website of a client has two collections. They use the same fieldset. Collection X is a representation of active projects, whereas Collection Y represents past projects as references.

They asked me if there is a simple solution to move a project from the active status to the references archive. Right now they create a new entry within the references collection Y and copy all data from Collection X over manually, which of course is annoying.

I guess it's not implemented because every collection potentially has it's own fieldset, but if the fieldset is identical, there shouldn't be a technical problem, right?